CN104724106B - Control method and control system for AMT heavy-type special car transfer case shifting - Google Patents

Control method and control system for AMT heavy-type special car transfer case shifting Download PDF

Info

Publication number
CN104724106B
CN104724106B CN201510033165.3A CN201510033165A CN104724106B CN 104724106 B CN104724106 B CN 104724106B CN 201510033165 A CN201510033165 A CN 201510033165A CN 104724106 B CN104724106 B CN 104724106B
Authority
CN
China
Prior art keywords
transfer gear
car body
body controller
controller bcu
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510033165.3A
Other languages
Chinese (zh)
Other versions
CN104724106A (en
Inventor
吴立香
曹文斌
王殿辉
赵玉超
刘洋
田磊
张文斌
王军
张永刚
郭庆波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN201510033165.3A priority Critical patent/CN104724106B/en
Publication of CN104724106A publication Critical patent/CN104724106A/en
Application granted granted Critical
Publication of CN104724106B publication Critical patent/CN104724106B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

The invention discloses a control method and a control system for AMT heavy-type special car transfer case shifting. The control system comprises a car body controller BCU, an engine ECU, a transmission TCU, a transmission shifting actuating mechanism, a transfer case switch, a transfer case and an instrument. The engine ECU, the transmission TCU, the transmission shifting actuating mechanism, the transfer case switch, the transfer case and the instrument are connected with the car body controller BCU. The control method and the control system for the AMT heavy-type special car transfer case shifting have the advantages that clutch disengaging and automatic transfer case controlling of an ATM heavy-type special car are achieved, transfer case shifting can be directly carried out by a driver, the driving technique difficulty is lowered, the driving operating intensity is greatly lowered, the car performance is improved, and the safety and the reliability are achieved.

Description

A kind of control method and control system of AMT heavy type special purpose vehicle transfer gear gearshift
Technical field
The present invention relates to AMT vehicle technical fields, more particularly to a kind of controlling party of AMT heavy type special purpose vehicle transfer gear gearshift Method and control system.
Background technology
The gearbox of many heavy special vehicles all carries transfer gear, and transfer gear is a kind of pinion unit, its input shaft It is connected with the output shaft of speed changer directly or by universal driving device, output shaft then has some, respectively Jing universal driving devices It is connected with each drive axle, the odd-side again many equivalent to gearbox of the vehicle with transfer gear, vehicle can be in different speed Than lower operation.It is speed that its gearshift is required<5km/h, while input shaft rotating speed<150rpm.In conventional gear box car In type, as driver it was observed that after speed is less than 5km/h, releasing the clutch pedal, then push switching signal, transfer is made Device realizes the switching of gear.But in AMT vehicles, without clutch pedal, traditional method of operating can not make clutch separation To carry out gear switching, clutch control is all by transmission electronic control unit（TCU）Control, driver can not directly be controlled System.And carry the small-sized AMT vehicles of transfer gear and switch in transfer gear gear, need driver by car come to a complete stop just can top grade change to it is low Shelves, and if operating personnel do not meet gearshift in the case of start transfer gear gearshift, easily cause gearbox and transfer gear etc. Abrasion.
The content of the invention
In order to solve AMT heavy type special purpose vehicle in the case of equipped with transfer gear, driver can directly carry out transfer gear and change Gear problem, the invention provides the control method and control system of a kind of safe and reliable AMT heavy type special purpose vehicle transfer gear gearshifts.
In order to realize foregoing invention purpose, the invention provides a kind of controlling party of AMT heavy type special purpose vehicle transfer gear gearshifts Method, comprises the following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Detection engine speed, if the close idling of engine speed, execution step（4）If engine speed is higher than Idling, then execution step（3）；
（3）The order of control engine speed is sent, control engine speed is to idling；
（4）Send the TC1 control commands of clutch separation；
（5）Clutch slip rate CAN message is read, clutch slip rate is judged, when in setting time internal clutch sliding Rate reach 100% after execution step（6）, when if condition is unsatisfactory for, execution step（8）；
（6）Transfer gear gearshift magnetic valve action is driven, if transfer gear is shifted gears in place, execution step（8）If, gearshift Then execution step not in place（7）；
（7）If in 5 seconds, being not received by successful signal of shifting gears, will stop driving transfer gear gearshift magnetic valve and taking Disappear the control command to clutch, and transfer gear gearshift failure is shown in instrument；
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, transfer gear gearshift terminates；
（9）Exit transfer gear gearshift function and perform order, proceed to the work of other modules.
Wherein, step（2）In, engine speed s1Close idling sDRefer to s1-sD≤100rpm；The engine Rotating speed s1Higher than idling sDRefer to s1-sD＞ 100rpm；The step（6）In, the transfer gear includes two shift switch, point It is not neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, when transfer gear is low During shelves, neutral normal open switch and low-grade normally closed switch are also turned on, and when transfer gear is in neutral, neutral normal open switch and low grade are normal Make and break is closed and simultaneously switched off, and judges whether transfer gear shifts gears in place by judging two gear on-off signals of transfer gear.
Specifically, the control method of AMT heavy type special purpose vehicle transfer gear gearshift is comprised the following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Car body controller BCU checks engine speed by CAN, if the close idling of engine speed, performs Step（4）If engine speed is higher than idling, execution step（3）；Wherein, engine speed s1Close idling sDRefer to s1-sD≤100rpm；Engine speed s1Higher than idling sDRefer to s1-sD＞ 100rpm；
（3）Car body controller BCU sends the order of control engine speed by CAN, and control engine speed is extremely Idling；
（4）Car body controller BCU sends the TC1 control commands of clutch separation to transmission electronic control unit TCU；
（5）Car body controller BCU reads in real time the clutch slip rate CAN letter of transmission electronic control unit TCU transmission Breath, judges clutch slip rate, when execution step after setting time internal clutch slip rate reaches 100%（6）, it is now traditional System is fully disconnected, if condition is unsatisfactory for, execution step（8）；
（6）Car body controller BCU drives transfer gear gearshift magnetic valve action, if transfer gear is shifted gears in place, performs step Suddenly（8）, the execution step if gearshift is not in place（7）；
（7）If in 5 seconds, car body controller BCU is not received by successful signal of shifting gears, car body controller BCU will stop The control command of transfer gear gearshift magnetic valve and cancellation to clutch is only driven, transfer gear gearshift failure is shown in instrument；Its In, the car body controller BCU drives transfer gear gearshift magnetic valve to carry out gear shifting action, and transfer gear is opened including two gearshifts Close, be respectively neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, and works as transfer In low grade, neutral normal open switch and low-grade normally closed switch are also turned on device, when transfer gear is in neutral, neutral normal open switch and Low-grade normally closed switch is simultaneously switched off, and car body controller BCU judges whether transfer gear changes according to the signal of the shift switch for receiving Gear is in place；
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, transfer gear gearshift terminates；
（9）Car body controller BCU exits this function performing module, proceeds to the work of other modules.
In order to preferably realize foregoing invention purpose, present invention also offers a kind of AMT heavy type special purpose vehicle transfer gear gearshifts Control system, including following device：
（1）When vehicle speed value is in below 5km/h, start the device of transfer gear shift switch；
（2）Detection engine speed, if the close idle speed value of engine speed, execution step（4）If engine speed is high In idle speed value, then execution step（3）Device；
（3）The order of control engine speed is sent, the device of engine speed to idle speed value is controlled；
（4）Send the device of the TC1 control commands of clutch separation；
（5）Clutch slip rate CAN message is read, clutch slip rate is judged, when in setting time internal clutch sliding Rate reach 100% after execution step（6）, when if condition is unsatisfactory for, execution step（8）Device；
（6）Transfer gear gearshift magnetic valve action is driven, if transfer gear is shifted gears in place, execution step（8）If, gearshift Then execution step not in place（7）Device；
（7）If in 5 seconds, being not received by successful signal of shifting gears, will stop driving transfer gear gearshift magnetic valve and taking Disappear the control command to clutch, and the device of transfer gear gearshift failure is shown in instrument；
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, the device that transfer gear gearshift terminates；
（9）Exit transfer gear gearshift function and perform order, proceed to the device of other module work.
Specifically, a kind of control system of AMT cars transfer gear gearshift, including car body controller BCU, Engine ECU, speed change Device TCU, shift of transmission executing agency, transfer gear switch, transfer gear and instrument, the Engine ECU, speed changer TCU, speed change Device gear shifting actuating mechanism, transfer gear switch, transfer gear and instrument are connected with the car body controller BCU；
The car body controller BCU, is connected by CAN with the Engine ECU and the speed changer TCU, is used for Engine speed is checked, the tachometer value of clutch output shaft and the slip rate of clutch is read, and reception transfer gear is shifted to The switching signal of position；
The transfer gear switch, for sending gear switching request signal to car body controller BCU；
The transfer gear, for receiving the gear switching signal of car body controller BCU transmissions；
The speed changer TCU, for receiving the control command of the clutch separation of car body controller BCU transmissions；
The instrument, for receiving and show car body controller BCU send transfer gear shifting state.
The car body controller BCU is connected by CAN with the transfer gear；Transfer gear switch is pressed, it is full when simultaneously During sufficient three below condition：A, vehicle speed value are less than idling, c, the clutch in setting time in below 5km/h, b, engine speed Device slip rate is more than setting value, and the car body controller BCU can just drive transfer gear gearshift magnetic valve.
The method of work of the control system of above-mentioned AMT cars transfer gear gearshift, comprises the following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Car body controller BCU checks engine speed by CAN, if the close idling of engine speed, performs Step（4）If engine speed is higher than idling, execution step（3）；Engine speed s1Close idling sDRefer to s1-sD ≤100rpm；Engine speed s1Higher than idling sDRefer to s1-sD≥100rpm；
（3）Car body controller BCU sends the order of control engine speed by CAN, and control engine speed is extremely Idling；
（4）Car body controller BCU sends the TC1 control commands of clutch separation to transmission electronic control unit TCU；
（5）Car body controller BCU reads in real time the clutch slip rate CAN letter of transmission electronic control unit TCU transmission Breath, judges clutch slip rate, when execution step after setting time internal clutch slip rate reaches 100%（6）, it is now traditional System is fully disconnected, if condition is unsatisfactory for, execution step（8）；
（6）Car body controller BCU drives transfer gear gearshift magnetic valve action, if transfer gear is shifted gears in place, performs step Suddenly（8）, the execution step if gearshift is not in place（7）；
（7）If in 5 seconds, car body controller BCU is not received by successful signal of shifting gears, car body controller BCU will stop The control command of transfer gear gearshift magnetic valve and cancellation to clutch is only driven, transfer gear gearshift failure is shown in instrument；Its In, the car body controller BCU drives transfer gear gearshift magnetic valve to carry out gear shifting action, and transfer gear is opened including two gearshifts Close, be respectively neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, and works as transfer In low grade, neutral normal open switch and low-grade normally closed switch are also turned on device, when transfer gear is in neutral, neutral normal open switch and Low-grade normally closed switch is simultaneously switched off, and shift switch signal is sent to car body controller BCU, and car body controller BCU is according to reception Shift switch signal is judging whether transfer gear shifts gears in place.
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, transfer gear gearshift terminates；
（9）Car body controller BCU exits this function performing module, proceeds to the work of other modules.
The invention has the beneficial effects as follows：The present invention realizes clutch separation with transfer gear gearshift certainly AMT heavy type special purpose vehicle Dynamic control, driver can directly carry out transfer gear gearshift, reduce driving technology difficulty, and driver behavior intensity is mitigated significantly, carry High vehicle performance, it is safe and reliable.
Description of the drawings
Fig. 1 is the structured flowchart of the embodiment of the present invention 1.
Fig. 2 is the flow chart of Example 1 and Example 2 of the present invention.
Specific embodiment
Embodiment 1
Referring to Fig. 1 and Fig. 2, the embodiment of the present invention 1 provides a kind of control system of AMT heavy type special purpose vehicle transfer gear gearshifts System, including car body controller BCU, Engine ECU, speed changer TCU, shift of transmission executing agency, transfer gear switch, transfer gear And instrument, the Engine ECU, speed changer TCU, shift of transmission executing agency, transfer gear switch, transfer gear and instrument with The car body controller BCU connections；
Car body controller BCU, is connected, for checking by CAN with the Engine ECU and the speed changer TCU Engine speed, reads the tachometer value of clutch output shaft and the slip rate of clutch, and receives transfer gear and shift gears in place Switching signal；
Transfer gear is switched, for sending gear switching request signal to car body controller BCU；
Transfer gear, for receiving the gear switching signal of car body controller BCU transmissions, and starts unit switching solenoid valve；
Speed changer TCU, for receiving the clutch separation control command of car body controller BCU transmissions；
Instrument, for receiving and show car body controller BCU send transfer gear shifting state.
Wherein, car body controller BCU is connected by CAN with the transfer gear；Transfer gear switch is pressed, it is full when simultaneously During sufficient three below condition：A, vehicle speed value are less than idling, c, the clutch in setting time in below 5km/h, b, engine speed Device slip rate is more than setting value, and the car body controller BCU can just drive transfer gear gearshift magnetic valve.
The method of work of the control system of above-mentioned AMT cars transfer gear gearshift, comprises the following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Car body controller BCU checks engine speed by CAN, if the close idling of engine speed, performs Step（4）If engine speed is higher than idling, execution step（3）；Engine speed s1Close idling sDRefer to s1-sD ≤100rpm；Engine speed s1Higher than idling sDRefer to s1-sD≥100rpm；
BCU checks EEC1 signals to learn that engine speed is s1 that concrete message content please see the table below by CAN, The transmission cycle is 20ms；
Message name PGN titles Message content
EEC1 Engine Speed s1（rpm）
（3）Car body controller BCU sends the order of control engine speed by CAN, and control engine speed is extremely Idling；
Car body controller BCU controls engine speed by CAN sending signal TSC1, makes engine speed to idle Speed, concrete message content please see the table below, and the transmission cycle is 10ms；
（4）Car body controller BCU sends the TC1 control commands of clutch separation to transmission electronic control unit TCU；
Vehicle body control unit BCU sends the life of control clutch separation by CAN to transmission control unit TCU Order, concrete message content please see the table below, and the transmission cycle is 50ms；
（5）Car body controller BCU reads in real time the clutch slip rate CAN letter of transmission electronic control unit TCU transmission Breath, judges clutch slip rate, when execution step after setting time internal clutch slip rate reaches 100%（6）, it is now traditional System is fully disconnected, if condition is unsatisfactory for, execution step（8）；
（6）Car body controller BCU drives transfer gear gearshift magnetic valve action, if transfer gear is shifted gears in place, performs step Suddenly（8）, the execution step if gearshift is not in place（7）；
（7）If in 5 seconds, car body controller BCU is not received by successful signal of shifting gears, car body controller BCU will stop The control command of transfer gear gearshift magnetic valve and cancellation to clutch is only driven, transfer gear gearshift failure is shown in instrument；Its In, car body controller BCU drives transfer gear gearshift magnetic valve to carry out gear shifting action, and transfer gear includes two shift switch, point It is not neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, when transfer gear is low During shelves, neutral normal open switch and low-grade normally closed switch are also turned on, and when transfer gear is in neutral, neutral normal open switch and low grade are normal Make and break is closed and simultaneously switched off, and shift switch signal is sent to car body controller BCU, and car body controller BCU is opened according to the gearshift for receiving OFF signal is judging whether transfer gear shifts gears in place；Specific control command such as following table, TC1 sends the cycle for 50ms；
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, transfer gear gearshift terminates；
（9）Car body controller BCU exits this function performing module, proceeds to the work of other modules.
Embodiment 2
Referring to Fig. 2, a kind of control method of AMT heavy type special purpose vehicle transfer gear gearshift is embodiments provided, including Following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Car body controller BCU checks engine speed by CAN, if the close idling of engine speed, performs Step（4）If engine speed is higher than idling, execution step（3）；
BCU checks EEC1 signals to learn that engine speed is s1 that concrete message content please see the table below by CAN, The transmission cycle is 20ms；
Message name PGN titles Message content
EEC1 Engine Speed s1（rpm）
（3）Car body controller BCU sends the order of control engine speed by CAN, and control engine speed is extremely Idling；
Car body controller BCU controls engine speed by CAN sending signal TSC1, makes engine speed to idle Speed, concrete message content please see the table below, and the transmission cycle is 10ms；
（4）Car body controller BCU sends the TC1 control commands of clutch separation to transmission electronic control unit TCU；
Vehicle body control unit BCU sends the life of control clutch separation by CAN to transmission control unit TCU Order, concrete message content please see the table below, and the transmission cycle is 50ms；
（5）Car body controller BCU reads in real time the clutch slip rate CAN letter of transmission electronic control unit TCU transmission Breath, judges clutch slip rate, when execution step after setting time internal clutch slip rate reaches 100%（6）, it is now traditional System is fully disconnected, if condition is unsatisfactory for, execution step（8）；Wherein, transmission electronic control unit TCU is become by reading The input axle sensor of fast device is obtaining clutch slip rate；
（6）Car body controller BCU drives transfer gear gearshift magnetic valve action, if transfer gear is shifted gears in place, performs step Suddenly（8）, the execution step if gearshift is not in place（7）；
（7）If in 5 seconds, car body controller BCU is not received by successful signal of shifting gears, car body controller BCU will stop The control command of transfer gear gearshift magnetic valve and cancellation to clutch is only driven, transfer gear gearshift failure is shown in instrument；Its In, car body controller BCU drives transfer gear gearshift magnetic valve to carry out gear shifting action, and transfer gear includes two shift switch, point It is not neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, when transfer gear is low During shelves, neutral normal open switch and low-grade normally closed switch are also turned on, and when transfer gear is in neutral, neutral normal open switch and low grade are normal Make and break is closed and simultaneously switched off, and shift switch signal is sent to car body controller BCU, and car body controller BCU is according to the switch letter for receiving Number judging whether transfer gear shifts gears in place；Specific control command such as following table, TC1 sends the cycle for 50ms；
（8）Cancel control command all of to clutch after 5 seconds, it is normal that transmission electronic control unit TCU performs other Work, transfer gear gearshift terminates；
（9）Car body controller BCU exits this function performing module, proceeds to the work of other modules.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims (2)

1. the control system that a kind of AMT heavy type special purpose vehicle transfer gear is shifted gears, including car body controller BCU, Engine ECU, speed change Device TCU, shift of transmission executing agency, transfer gear switch, transfer gear and instrument, the Engine ECU, speed changer TCU, speed change Device gear shifting actuating mechanism, transfer gear switch, transfer gear and instrument are connected with the car body controller BCU；
The car body controller BCU, is connected, for checking by CAN with the Engine ECU and the speed changer TCU Engine speed, reads the tachometer value of clutch output shaft and the slip rate of clutch, and receives transfer gear and shift gears in place Switching signal；
The transfer gear switch, for sending gear switching request signal to car body controller BCU；
The transfer gear, for receiving the gear switching signal of car body controller BCU transmissions；
The speed changer TCU, for receiving the control command of the clutch separation of car body controller BCU transmissions；
The instrument, for receiving and show car body controller BCU send transfer gear shifting state；
The car body controller BCU is connected by CAN with the transfer gear；Press transfer gear switch, when meet simultaneously with During lower three conditions：In below 5km/h, b, engine speed are less than idling for a, vehicle speed value, c, slide in setting time internal clutch Shifting rate is more than setting value, and the car body controller BCU can just drive transfer gear gearshift magnetic valve.
2. the control method of the control system of AMT according to claim 1 heavy type special purpose vehicle transfer gear gearshift, its feature exists In the control method of the control system is comprised the following steps：
（1）When vehicle speed value is in below 5km/h, start transfer gear shift switch；
（2）Car body controller BCU checks engine speed by CAN, if the close idling of engine speed, execution step （4）If engine speed is higher than idling, execution step（3）；Engine speed s1Close idling sDRefer to s1-sD≤ 100rpm；Engine speed s1Higher than idling sDRefer to s1-sD≥100rpm；
（3）Car body controller BCU sends the order of control engine speed by CAN, and control engine speed is to idling；
（4）Car body controller BCU sends the TC1 control commands of clutch separation to transmission electronic control unit TCU；
（5）Car body controller BCU reads in real time the clutch slip rate CAN message of transmission electronic control unit TCU transmission, sentences Dialysis clutch slip rate, when execution step after setting time internal clutch slip rate reaches 100%（6）, now legacy system is complete It is complete to disconnect, if condition is unsatisfactory for, execution step（8）；
（6）Car body controller BCU drives transfer gear gearshift magnetic valve action, if transfer gear is shifted gears in place, execution step （8）, the execution step if gearshift is not in place（7）；
（7）If in 5 seconds, car body controller BCU is not received by successful signal of shifting gears, car body controller BCU will stop driving The control command of dynamic transfer gear gearshift magnetic valve and cancellation to clutch, shows transfer gear gearshift failure in instrument；Wherein, institute State car body controller BCU to drive transfer gear gearshift magnetic valve to carry out gear shifting action, transfer gear includes two shift switch, respectively It is neutral normal open switch and low-grade normally closed switch, when transfer gear is in high gear, neutral normal open switch is connected, when transfer gear is in low grade When, neutral normal open switch is also turned on low-grade normally closed switch, and when transfer gear is in neutral, neutral normal open switch and low grade are normally closed Switch is simultaneously switched off, and shift switch signal is sent to car body controller BCU, and car body controller BCU is according to the shift switch for receiving Signal is judging whether transfer gear shifts gears in place；
（8）Cancel control command all of to clutch after 5 seconds, transmission electronic control unit TCU performs other normal works, Transfer gear gearshift terminates；
（9）Car body controller BCU exits this function performing module, proceeds to the work of other modules.
CN201510033165.3A 2015-01-22 2015-01-22 Control method and control system for AMT heavy-type special car transfer case shifting Active CN104724106B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510033165.3A CN104724106B (en) 2015-01-22 2015-01-22 Control method and control system for AMT heavy-type special car transfer case shifting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510033165.3A CN104724106B (en) 2015-01-22 2015-01-22 Control method and control system for AMT heavy-type special car transfer case shifting

Publications (2)

Publication Number Publication Date
CN104724106A CN104724106A (en) 2015-06-24
CN104724106B true CN104724106B (en) 2017-05-10

Family

ID=53448685

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510033165.3A Active CN104724106B (en) 2015-01-22 2015-01-22 Control method and control system for AMT heavy-type special car transfer case shifting

Country Status (1)

Country Link
CN (1) CN104724106B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114542714B (en) * 2022-03-04 2024-01-05 北京汽车集团越野车有限公司 Method and device for adjusting gear of transfer case
CN115419708B (en) * 2022-09-30 2023-10-27 中国重汽集团济南动力有限公司 Control method for transfer case of special vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101078377A (en) * 2007-07-02 2007-11-28 东风汽车有限公司 Protection control method for preventing low-gear operation of automobile
CN103671896A (en) * 2013-12-11 2014-03-26 徐州凯尔农业装备股份有限公司 Control device for automatic shifting system of high-power wheeled tractor
CN103982647A (en) * 2014-03-04 2014-08-13 南京徐工汽车制造有限公司 Electric control device of all-wheel drive transfer case

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8483921B2 (en) * 2009-06-03 2013-07-09 Nissan Motor Co., Ltd. Two/four-wheel drive mode shift controller for traction-transmitting part time four-wheel drive vehicle and method for controlling the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101078377A (en) * 2007-07-02 2007-11-28 东风汽车有限公司 Protection control method for preventing low-gear operation of automobile
CN103671896A (en) * 2013-12-11 2014-03-26 徐州凯尔农业装备股份有限公司 Control device for automatic shifting system of high-power wheeled tractor
CN103982647A (en) * 2014-03-04 2014-08-13 南京徐工汽车制造有限公司 Electric control device of all-wheel drive transfer case

Also Published As

Publication number Publication date
CN104724106A (en) 2015-06-24

Similar Documents

Publication Publication Date Title
US7625311B2 (en) Method for the operation of a hybrid drive train in a motor vehicle
CN101954905B (en) Coasting control systems and methods for automatic transmission
CN105673832B (en) Double-clutch automatic gearbox half hitch chalaza operating condition control method
CN100538104C (en) Be used for preventing the method for automobile load change impacts
CN100489350C (en) Failure control apparatus for automatic transmission
CN102678871A (en) Electric vehicle and three-clutch transmission device for same
CN101135371B (en) Shift shock reducing apparatus for power train
CN103620271B (en) The controlling method of two clutch type speed changer, two clutch type speed changer and carry the vehicle of this pair of clutch type speed changer
JPH0443819B2 (en)
JP2002147597A (en) Control device for automatic transmission for vehicle
JP3753042B2 (en) Exhaust brake control device
US20130005531A1 (en) Shift control system and method for automated manual transmission
CN102410365A (en) Gear shifting and protection control strategy of wet clutch for continuously variable transmission
CN105814332A (en) Contact point determination
US10167910B2 (en) Method for operating a transmission device for a motor vehicle, and corresponding transmission device
CN104724106B (en) Control method and control system for AMT heavy-type special car transfer case shifting
US10589734B2 (en) Method for operating a drive device for a motor vehicle and corresponding drive device
CN102606315B (en) Based on engine throttle accelerator control system and the controlling method of DCT
US4478108A (en) Control apparatus for oil pressure operated type transmission for vehicle
US7967723B2 (en) Placing an automatic synchronized transmission into a starting speed
CN106481803A (en) Electric automobile two keeps off line traffic control automatic transmission shift intervention control method
CN103032564B (en) For operation equipment and the controlling method thereof of the automatic double-clutch speed changer of motor vehicle
CN109421695B (en) Method for operating a drive train of a motor vehicle and drive train module
JP4932362B2 (en) Control device, control method and transmission system for automobile
CN104973046A (en) Limiting Regenerative Torque For A Hybrid Electric Powertrain

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant